無限の二次元銀-硫黄のネットワークを持つ高導電中性協調ポリマー

Xing Huang^1,2, Haisheng Li³, Zeyi Tu^1,2

¹Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic Solids , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , China.

Journal of the American Chemical Society

|September 13, 2018

まとめ

研究者らは高結晶銀基調整ポリマーフィルム (Ag-BHT) を作成した. これらのフィルムは,独特の二次元銀-硫黄ネットワークと部分的に満たされたバレンスの帯によって高い電気伝導性を示す.

科学分野:

材料科学
固体化学
ナノテクノロジー

背景:

調整ポリマーには調節可能な電子特性があります
シルバーベースの材料は,導電性アプリケーションのために探求されています.
ベンゼネヘクサチオール (BHT) は,拡張ネットワークを作成するための多機能リガンドです.

研究の目的:

銀基の新型協調ポリマー[Ag5(C6S6) ]n (Ag-BHT) の高結晶膜を合成し,特徴づけること.
Ag-BHT フィルムの電気伝導性を支配する構造-特性関係を明らかにする.
観測された伝導性の電子起源を調査する.

主な方法:

高結晶のAg-BHTフィルムの製造
回転電子微分と粉末X線微分を用いて構造を決定する.
300Kでの電気伝導度測定
紫外線光電子スペクトロスコーピー (UPS) と電子帯域構造計算による電子的特徴化.

主要な成果:

ラメラー構造の高結晶Ag-BHTフィルムを合成した.
構造は2次元のAg-Sネットワークと1次元の金属-ディチオリンポリマー層を交互に特徴付けています.
300 Kで250 S·cm-1までの高い電気伝導性を達成した.
UPSと計算は,導電性に寄与する部分的に満たされた値帯を確認した.

結論:

独特の二次元Ag-Sネットワークは,Ag-BHTの高い電気伝導性に不可欠です.
部分的に満たされたバレンスの帯は,効率的な電荷輸送を可能にする重要な電子機能です.
Ag-BHTは,高度な電子アプリケーションのための有望な材料です.

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